docs: hal_gpio explain the purpose and detination location of the rules file.

andypugh · web-flow · commit 96154addecf9 · 2024-06-08T15:50:28.000+01:00
diff --git a/docs/src/drivers/hal_gpio.adoc b/docs/src/drivers/hal_gpio.adoc
@@ -116,7 +116,8 @@ If "access denied" messages are returned on loading the driver, try the followin
 sudo groupadd gpio
 ----
 
-. Create a file called `90-gpio-access` with the following contents (this is copied from the Raspbian install)
+. Then to setup permissions for  the "gpio" group, create a file called `90-gpio-access` in the `/etc/udev/rules.d/`
+directory  with the following contents (this is copied from the Raspbian install)
 +
 ----
 SUBSYSTEM=="bcm2835-gpiomem", GROUP="gpio", MODE="0660"

Original file line number	Diff line number	Diff line change
`@@ -116,7 +116,8 @@ If "access denied" messages are returned on loading the driver, try the followin`
`116`	`116`	`sudo groupadd gpio`
`117`	`117`	`----`
`118`	`118`
`119`		-. Create a file called `90-gpio-access` with the following contents (this is copied from the Raspbian install)
	`119`	+. Then to setup permissions for the "gpio" group, create a file called `90-gpio-access` in the `/etc/udev/rules.d/`
	`120`	`+directory with the following contents (this is copied from the Raspbian install)`
`120`	`121`	`+`
`121`	`122`	`----`
`122`	`123`	`SUBSYSTEM=="bcm2835-gpiomem", GROUP="gpio", MODE="0660"`